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A box-shaped wood stove has dimensions of 0.75 m x 1.2 m x 0.40 m an emissivity of 0.81, and a surface temperature of 210 degree C. Calculate its rate of radiation into the surrounding space. Please show all work.
A 140-m-wide river flows due east at a uniform speed of 3.9 m/s. A boat with a speed of 7.8 m/s relative to the water leaves the south bank pointed in a direction 39o west of north. How long does it take for the boat to cross the river
A 530.0g bird is flying horizontally at 2.20m/s, not paying much attention, when it suddenly flies into a stationary vertical bar, What is the angular velocity of the bar just after it is hit by the bird
q1. a circular loop of radius 11 cm lies in the plane of the paper. a constant magnetic field of 250 mt is directed
The net force acting on an object in the horizontal direction is 25 newtons, Find the angle from the horizontal in which the force is acting
The power output of he Sun is 3.9 x 10^26 watts. Determine the intensity of the Sun's radiation on he planet Earth
A 1.4-kg playground ball is moving with a velocity of 3.0 m/s directed 30° below the horizontal just before it strikes a horizontal surface. compute the magnitude of the average resultant force on the ball
An arrow is fired horizontally with a speed of 68. m/s directly at the bulls eye of a target 50 m away. When fired, the arrow is 120-m above the ground. How far short of the target does it strike the ground.
The potential energy of a particle moving in the x-y plane is U=a/(x^2+y^2)^1/2, where a is a constant. What is the force on the particle
If a 25-gram bullet with a speed of 330 m/s travels 15 cm into a tree before stopping, what's the average force exerted to stop the bullet
Three 10.53-g Styrofoam balls of radius 2 cm are coated with carbon black to make them conducting, Determine the absolute value of q
you are on an airplane traveling 30deg south of due west at 150.0 ms with respect to the air. the air is moving with a
Choose the origin to be at the location where the bullet begins to move. Then the force (in newtons) exerted by the expanding gas on the bullet is 14100 + 9700x - 25750x2, where x is in meters.
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